User guide

7-6 B
LACK
D
IAMOND
U
SER
G
UIDE
Q
UALITY OF
S
ERVICE
(Q
O
S)
Egress mode
• IP destination address
• Destination MAC address
• VLAN
P
RIORITIZATION
Prioritization is used when there is bandwidth contention for transmission on a port.
The four levels of priority are used as a mechanism for resolving the contention
between traffic groups. If traffic groups have the same priority, a “round-robin”
algorithm is applied.
C
REATING AND
C
ONFIGURING A
Q
O
S P
ROFILE
Up to 28 custom QoS profiles can be created on the BlackDiamond in egress mode. To
create a QoS profile, use the following command:
create qosprofile <name>
A new QoS profile is created with the following default values:
• Minimum bandwidth — 0%
• Maximum bandwidth — 100%
• Priority — low
Each of the default values is configurable by using the following command in egress
mode:
config qosprofile <qosname> {minbw <percent>} {maxbw <percent>}
{priority <level>}
In ingress mode, use the same command syntax to modify the bandwidth parameters of
the default QoS profiles. However, the priority level specified is ignored.